Gasolene-engine muffler.



N0. 75s,s45. PATENTED MAR. a, 1904. R. W. BROGKWAY & F. J. MEGKENSTURM.

GASOLENE ENGINE MUFFLER.

APPLICATION FILED AUG. 7, 1903.

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N0 MODEL.

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No. 753,845. PATENTED MAR. 8, 1904. R W. BROGKWAY & F. J. MEGKENSTURM.

GASOLENE ENGINE MUFFLER.

APPLICATION FILED AUG. 7, 1903.

2 SHEETSSHEET 2.

N0 MODEL.

Wiigzss W w llforryz ys 2 U ITED STATES Patented March 8, 1904.

PATENT OFFICE.

RICHARD W. BROOKWAY AND FRANCIS J. MEOKENSTURM, or MooDUs,

, Q ooNNEcTroUT.

I GASOLENE-ENGINEMUFFLER.

' Application filed August 7, 1903.

Be it'known that we, RICHARD W. BROCKWAY [and FRANCIS J. MEOKENSTURM, citizens of the United States, residing at Moodus, in the county of Middlesex and State of Connecticut, have invented a new and useful Gasolene-Engine Muifle'r, of Which the following is a specification.

This invention relates to certain improvements in mufflers, and particularlyto that class employed for reducing the noise created by the exhaust ofexplosive-engines, although the principle maybe applied for the noiseless exhaustor dischargeof steam, air, or other fluids under pressure. 5

One of the principal objects of the invention is to provide a muffler of simple character, in which a practically silent exhaust might be obtained by permitting the exploded charge to expand in a natural manner Within the muffler-chamber and at the same time cool it, so that the pressure will quickly fall, and thence after passing the cool mixture-through a small chamber again afford opportunity for expansion before allowing the gasto pass to the "final discharge.

A still further object ofthe-invention is to provide a mufiler in which the exploded charge will be subjected to the action of water or an equivalent fluid for more quickly cooling the charge. g

' ith these and other objects in view, as will hereinafter more fully appear, the invention consists in the novel construction and arrangement of parts hereinafter described, illustrated in the accompanying drawings,and particularly pointed out in the appended claims, it being understood that .various changes in the form, proportionssize,"and'minor details of the structure may be made Without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings, Figure 1 is a sectional elevation of the muflier constructed in accordance with the invention. Fig. 2 is a transverse sectional elevation of the same on the line 2 2 of Fig. 1. Figs. 3 and 4 are views corresponding to Figs. 1 and 2, illustrating a slight modification of the invention.

,s'rnorrronrron' forming part of Letters Patent No. 753,845, dated. March 8,1904.

Serial No. 168,640. (No model.)

Similar numerals of reference are employed to indicate corresponding parts throughout .the several figures of the drawings.

The muflier has two oppositely-disposed conical heads or casings 1 and 2, the larger and adjacentends of said casings being provided with marginal flanges 3, which may be bolted, riveted,or otherwise secured together in order to form a tight joint. Through these two casings extends a tube 4, connected at one end to the exhaust-port of the engine and the other end connected to a steam or gas dischargepipe for exhausting directly to the outer air.

In the head 1 is arranged a transverse partition-G, preferably conical in form, but dis- .posed at a lesser angle to the vertical than the conical shell 1.; This partition has perforaions 7, the combined area of which is equal to' or greater than the areaof' the inlet-pipe, so that no backpressure can result at this point. The head 2 is provided with a solid partition 8, at the lower end ofwhich is a threaded opening '9 to allow the passage of water to the greatest diameter of the mufller,

and this water may be drawn off from time to time by the removal of a threaded plug 10.

The pipe i is provided with two plugs 11 mit the free passage of steam from the central chamber formed by the partitions 6 and 8 to the end chamber formed bythe head 2. The inlet end of the pipe at a point within the head 1 is provided with a large number of perforations orslots 14 to afi'ord a free passage for the steam or gas and at the outlet end are similar perforations or slots 15 to permit the free escape of the steam or gas.

In the operation of the muffler, which may be placed in either a vertical 'or a horizontal .position, a charge enters through the pipe 4 and passes through the slots 14 to the interior of the head 1, where it is allowed to expand in a natural manner, the conical wall of the head and the conical partition being arranged at suitable angles for this purpose. The

charge being now partly cooled and expanded is divided by its passage through the numerous perforations 7 but, as before described, the combined area of these is equal to or greater than the area of the inlet-pipe, so that no back pressure can result at this point. After passing through the perforations 7 further expansion is permitted in the chamber.

formed between the two partitions, and the charge, now materially reduced as regards both temperature and pressure, passes through the perforations 13 and is conveyed by the pipe to the chamber formed in the head 2, being again allowed to expand before its final discharge through the slots 14:.

In Figs. 3 and 4 is illustrated a slight modification of the structure, similar referencenumerals being employed on parts corresponding to those shown in Figs. 1 and 2. The two partitions 6 and 8 are in the form of transverse parallel walls and each is provided with a central opening for the reception of a cylinder 16,. which for convenience may be provided with a pair of annular flanges fitting, respectively, against the perforations 6 and 8 in order that said cylinder may be held firmly in place. Both ends of the cylinder are rounded or dome-shaped and that end which projects through the perforation 6 is solid, while the opposite end and all of the remaining portion of the cylinder-wall is perforated to permit the free passage of the charge.

In the inlet-pipe of both forms of mufiier is connected a small Water-pipe 17 through which a stream of water is directed into contact with the exhaust before its entrance to the muffle and serves to a considerable extent to r duce the pressure of the charge by reducing its temperature.

The mufiier is found extremely serviceable in use and may be of any size and employed in connection with explosive, steam, and other engines without departing from the invention.

Having thus described the invention, What is claimed is 1. In a muffier, a casing in the form of a double cone, partitions dividing said easing into a plurality of chambers, one of said partitions being perforated, an inlet leading to one of the cones, an outlet leading from the other coneland a duct leading from the intermediate chamber of the mufiier through the solid partition to the outlet-cone.

2. In a mufiier, a casing in the form of a double cone, 2. pair of partitions arranged in the casing dividing the same into a plurality of compartments, one of said partitions being perforated, and a perforated cylinder extending through the second partition and forming a passage-way for the fluid.

3. In a mufiier, a casing, partitions dividing the casing into a plurality of compartments, one of said partitions being perforated, and a perforated cylinder extending through an opening formed in the second of said partitions.

4. In a mufiier, a casing in the form of a double cone, a pair of oppositely-disposed conical partitions arranged in the casing and dividing the same into a plurality of compartments, one of said partitions being perforated, and a pipe extending through the walls of the casing and the partitions, said pipe being plugged to form an intermediate cylindrical chamber and being further provided with openings to permit the passage of the exhaust from chamber to chamber of the muflier.

5. In a mufiier, a casing in the form of a double cone, a pair of oppositely-disposed conical partitions arranged within the casing and dividing the same into a plurality of compartments, one of said partitions being perforated, a pipe extending through the walls of the easing and the partitions, plugs arranged in said pipe to form a chamber intermediate of the length thereof, there being a plurality of perforations formed in that portion of the pipe between the plugs and serving to permit the passage of the exhaust from the intermediate to the final chamber and said pipe being further provided with slots or perforations at points within both the inlet and the final chamber of the muffler.

6. In a mufiier, a casing having expansionchambers, an exhaust-pipe leading thereinto, and a water-pipe connected to said exhaustpipe and adapted to discharge a stream of Water thereinto.

7. In a muffler, a casing formed of a pair of conical members secured together at their larger ends, a perforated partition carried by one of the members, a second and solid partition carried by the second member, both of said partitions being provided with alining openings, a cylinder extending through said openings and supported by the walls thereof, said cylinder having a solid head at that end extending through the perforated partition and the remaining portion of the walls of said cylinder being perforated to permit the passage of the fluid.

In testimony that we claim the foregoing as our own we have hereto afiixed our signatures in the presence of two witnesses.

RICHARD W. BROCKWAY. FRANCIS J. MECKENSTURM. Witnesses:

WILLIAM J. THOMAS, GEORGE H. VENTRES.

IIO 

